On the variation of relative intensity of V- and R-components of the Hα emission line and their radial velocity in the spectrum of X Persei.
Abstract
The 1974 - 1980 observations of the behaviour of the relative intensity of V- and R-components of the Hα emission line and their radial velocity of the Be star X Persei have been reexamined with the new data obtained in 1981 - 1982. It has been found that the variations of V/R and vr(V, R) occurs with the 3-year cycle. It is suggested that the variations of the relative intensity of V- and R-components are the result of overlapping of the sharp emission on the wide (700 - 800 km/s) emission from the envelope surrounding the Be star. It is proposed that the sharp emission is provided by the secondary component orbiting around the Be star, or by a gas stream flowing from the secondary to the primary component.
- Publication:
-
Izvestiya Ordena Trudovogo Krasnogo Znameni Krymskoj Astrofizicheskoj Observatorii
- Pub Date:
- 1986
- Bibcode:
- 1986IzKry..75..163G
- Keywords:
-
- B Stars;
- Binary Stars;
- H Alpha Line;
- Radial Velocity;
- Stellar Envelopes;
- Stellar Spectra;
- Emission Spectra;
- Radiant Flux Density;
- Stellar Mass Accretion;
- Astrophysics;
- Be Stars:H Alpha;
- Be Stars:Radial Velocities;
- Close Binaries:H Alpha;
- Close Binaries:Radial Velocities;
- H Alpha:Be Stars;
- H Alpha:Close Binaries;
- Radial Velocities:Be Stars;
- Radial Velocities:Close Binaries